#!/usr/bin/env python3.8
# %%
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines


N = int(readline())
C = int(readline())
V = int(readline())
S = tuple(map(int, readline().split()))
T = tuple(map(int, readline().split()))
Y = tuple(map(int, readline().split()))
M = tuple(map(int, readline().split()))

INF = 10 ** 9
dp = [[INF] * (C + 1) for _ in range(N + 1)]
dp[1][0] = 0

for c in range(C):
    for s, t, y, m in zip(S, T, Y, M):
        c1 = c + y
        if c1 > C:
            continue
        x = dp[s][c] + m
        if dp[t][c1] > x:
            dp[t][c1] = x

answer = min(dp[N])
if answer == INF:
    answer = -1

print(answer)